Very dark blue, almost looks black. Zip and button closure. Size medium. Bust runs a bit smaller. I’m a 36C and it fits, but it’s snug when I pull my elbows back. Also has a bit smaller sleeves at the top. I have average to maybe a bit bigger upper arms and it fits, but would be tight if I had larger upper arms. Hidden interior pockets on both sides. From a non-smoking, pet-friendly home.